The books you think you compete with are rarely the ones costing you sales. Competitor Discovery reads real Amazon keyword co-occurrence data, which books actually surface together in search results, and shows you the titles Amazon is measuring your book against when it decides how much visibility to give you.
Not your guess. The algorithm's.
Most publishers choose their competitors by instinct, the titles that look similar, share a cover style, or sit near them in the category list. Amazon does not work that way.
Amazon has already decided which books are genuinely interchangeable with yours, based on the searches you both turn up in and the buyers you both convert.
Until you can see that list, every listing decision you make is aimed at the wrong target.
The competitor list comes from which books actually appear together in Amazon search results, term after term, not from your assumptions or a category browse.
You see up to 20 books, ordered by how much keyword ground you share, so the titles Amazon compares you to most directly sit at the top.
Each competitor shows its Best Seller Rank next to its shared-keyword count, so you can tell the books worth studying apart from the books you can beat at a glance.
The shared-keyword count ranks every competitor by how directly Amazon measures you against them. The books at the top are the ones the algorithm treats as most interchangeable with yours.
High shared keywords and a strong Best Seller Rank is a competitor to learn from. Its keyword strategy is working and Amazon is rewarding it. Run it through Book Keyword Spy and understand exactly why.
High shared keywords and a weak Best Seller Rank is a competitor to beat. It owns the right searches but is not converting them, almost always a weak listing. The territory is sitting there for a stronger listing to take.
Competitor Discovery starts from your book, so it can map the field Amazon places around it.
The tool pulls competitor data from Amazon keyword co-occurrence and returns up to 20 books, ranked by shared keywords, with Best Seller Rank beside each.
From any competitor card, jump straight into Book Keyword Spy or the Keyword Gap Finder to study the books that matter and find the keywords you are missing.
Competitor Discovery tells you who to study. Book Keyword Spy shows you every keyword they rank for. Keyword Gap Finder shows you exactly where they beat you.
Use them together to build a listing brief grounded in real data, then take it to the Listing Optimizer.
Explore the full KDP toolkit →Competitor Discovery is built on real Amazon keyword co-occurrence data, pulled live, the same searches your buyers are actually making, not estimates or projections.
The strategic read on each competitor draws on the same publishing and market-analysis methodology Vappingo has applied across thousands of KDP titles since 2009.
It currently covers the Amazon US marketplace.
These figures are designed for comparison and planning. They are not guarantees of ranking, sales, visibility, or future performance.
Instead of guessing who you compete with, see the books Amazon actually ranks you against.
You enter your own book's ASIN and it returns up to 20 books that Amazon's algorithm treats as your direct competition, ranked by how many keywords you share, with each one's Best Seller Rank shown beside it.
A category page shows you what Amazon files near you. Competitor Discovery shows you what Amazon actually ranks you against, based on the searches you both appear in.
The two lists are often very different.
The number of search terms that both your book and the competitor currently rank for. The more you share, the more directly Amazon measures the two of you against each other.
It separates competitors to learn from, which rank well and sell well, from competitors to beat, which rank on the right terms but sell poorly, usually because of a weak listing you can exploit.
Up to 20 books, ranked by shared keywords, so the titles Amazon compares you to most directly appear at the top of the list.
Your own. Competitor Discovery starts from your book and maps the competitive field around it.
Competitor Discovery currently covers the Amazon US marketplace.
Competitor Discovery is a Pro feature at $29 per month. You can create a free account first and upgrade when you are ready.
Every competitor card links straight to Book Keyword Spy and the Keyword Gap Finder, so you can move from discovery to action in one click.
It is pulled live each time you run the tool, so it reflects the current state of the marketplace rather than a cached snapshot.
Find the books Amazon actually ranks you against, then go and beat them.